diff --git a/cpp/switchchain_exponent.cpp b/cpp/switchchain_exponent.cpp
index 6b6c0d0121713cf1cbe0240ccf36b452f66b9cb8..a862a133c15ed69daaa554f23ea96850a24429a7 100644
--- a/cpp/switchchain_exponent.cpp
+++ b/cpp/switchchain_exponent.cpp
@@ -78,11 +78,11 @@ int main() {
     Graph g1;
     Graph g2;
 
-    std::ofstream outfile("graphdata_exponent.m");
+    std::ofstream outfile("graphdata_exponent_hightau.m");
     outfile << '{';
     bool outputComma = false;
 
-    for (int numVertices = 2200; numVertices <= 4000; numVertices += 200) {
+    for (int numVertices = 1000; numVertices <= 10000; numVertices += 1000) {
         for (float tau : tauValues) {
 
             DegreeSequence ds(numVertices);
@@ -125,7 +125,7 @@ int main() {
                 std::cout << "Running n = " << numVertices << ", tau = " << tau
                           << ". \t" << std::flush;
 
-                int mixingTime = 32*(32.0f - 26.0f*(tau - 2.0f)) * numVertices; //40000;
+                int mixingTime = 32*(32.0f - 15.0f*(tau - 2.0f)) * numVertices; //40000;
                 constexpr int measurements = 50;
                 constexpr int measureSkip =
                     200; // Take a sample every ... steps